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Патент USA US3095144

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June 25, 1963
Filed March 23, 1960
4 Sheets-Sheet 1
June 25, 1963
Filed March 25, 1960
3,095, 134
4 Sheets-Sheet 2
@1- 12A
“4%,, M
June 25, 1963
F il>ed March 23, 1960
4 Sheets-Sheet 3
1 I w
49/’ @112 33'
v U1- J5
//// /// /’//’// //////////
June 25, 1963
Filed March 25, 1960
3,095, 134
4 Sheets-Sheet 4
$56 (42¢.
BY %" ,1 K, excl ,,-_
Patented June 25, 1963
sembling the liner sleeve and blank preparatory to form
Raymond E. Jacke, Richmond, Va, assignor to Reynolds
Metals Company, Richmond, Va., a corporation of
Filed Mar. 23, 1960, Ser. No. 17,222
10 Claims.
ing the container into a unitary structure.
FIG. 10A is a View of the liner in its essential position,
as taken on line 10A~Q10A, of FIG. 10, but with the
expanded better to show the articulated nature of
FIG. 11 is a schematic view in elevation of an apparatus
suitable for integrating the liner and blank as seen in FIG.
((31. 229-14)
This invention relates to an improved lined container
10 into the integrated' collapsed open-ended container of
and to an improved liner means for such a container or 10 FIG. 12.
FIG. 11A is a schematic view in plan of the apparatus
of FIG. 11 showing the relative sizes of the induction heat
ing panels and the collapsed container parts movable
FIG. 12 is a plan view of the integrated collapsed open
ended container following the second step of induction
FIG. 12A is a View of the liner in its assembled posi
20 tion within the container as taken on line 12A-12A of
FIG. 12, but with the ‘liner expanded, as in FIG. 10A.
'FIG. 13 is a perspective view of the top of the con
tainer in position for ?lling.
The liner is then sealed to the container by heating the
assembly so that the heat responsive adhesive bonds the
FIG. 14 is a perspective view of the top of the con
liner to the container.
This invention
tainer during the initial stage of sealing the liner top
seam following ?lling of the container; 'and
FIG. 15 is a perspective view of the top of the con
in sealed
tainer during the ?nal stage of forming the double seal
of the liner top seam.
particular utility in the
?eld of packaging liquids such as milk, fruit juice or the
FIG. 16 is a greatly enlarged cross section of a portion
like wherein such factors as sanitation,
of another embodiment of liner lamination attached to
the carton wall.
and expendability of ‘the container after a single use, are
of interest to the use .
Referring ?rst to FIG. 1, a completed container package
generally represented at 14} and having flat bottom, top
35 and side-wall portions, may be encased’ in a conventional
One object of the
overwrap 11. of any suitable material and With a con
ventional tear strip 12
non with the accompanying drawings,
preferred form of lined container ‘for liquids.
In the drawings, FIG. 1
?lled and sealed container. is a perspective view of the 40
FIG. 2 is a
In View of the signi?cance of the heat-scalable liner
in the combination, an explanation of its construction
45 is desirable prior to describing the container, and refer
. 3 is a top plan view of
?nal sealing thereof.
FIG. 3A is a sectional view of the liner top seam, taken 50
on line 3A—,3A of FIG. 3 to an enlarged scale.
FIG. 3B is a sectional view of the liner top seam
taken on line 3B-—3B of FIG. 3 to an enlarged scale.
G. 4 is a side elevation View of the container and
its top seam as shown in FIG. 3.
FIG. 5 is a developed view of the liner, a portion of
the line-embedded metallic foil being shown.
G. 5A is a sectional view of the liner taken on line
5A—5A of FIG. 5 to an enlarged scale.
FIG. 5B is a sectional view of the liner taken on line
5B-5B of FIG. 5 to an enlarged scale.
are provided, thus forming the liner
into a ?ve-layered or laminated structure. Accordingly,
by any suitable means,
FIG. 6 is a perspective view of a detail of the liner
edges shown prior to forming of the ‘liner into sleeve
FIG. 7 is a
the container body is formed.
FIG. 9 is a plan view showing the initial step of as
sembling the liner sleeve and blank preparatory to form 70
ing the container into a unitary structure.
FIG. 10 is a plan view showing the second step of as
rangement, of line embedding of the metallic layer 16
into the layer 19 of composition disposed therebeneath,
the like is passed longitudinally of these interlocked folds
as best seen in FIG. 5 and 5A. A series of closely spaced
parallel small grooves 21 are formed in one direction
across the entire outer surface of the liner layer 16, these
and localized heating is eifecte .
It will be understood that as this sealing action occurs,
the wax from layer 19 exudes through the perforations
in band 29 and forms an adhesive layer in contact with
the imperforate metallic inner surface 16 of the liner
immediately 'above the fold 31. Simultaneously, wax
are extruded on the lower side of the layer 16, these layer
pro " from layer 20 exudes through the paper layer 17 of the
lower side of the liner edge below the band 29 and forms
jections being embedded in the material comprising
19. The formation of such grooves may be readily made 10 an adhesive layer in contact with the imperforate metal
lic inner surface 16 of the liner, immediately below the
for example, by pressing the layer 16 against a knurled
interlocked fold 31. Since wax is supplied from two
die prior to incorporation of that layer into the remain
layer sources, an e?icient sealing of the longitudinal seam
der of the laminated liner sheet.
I prefer a line-embedding or scoring pattern of diamond - ‘ '33 of the liner is thus produced, and since the pleats now
grooves being intersected by a similar series of ‘grooves
22 at a suitable intersecting angle thereto. As the grooves
21 and 22 are formed, companion projections 23 and 24
shaped con?guration, although other geometrical patterns
to be described serve to relieve that seam of rupturing
may be used. As a result of the corrugated effect thus 15 stresses, the longitudinal seam 33 remains hermetically
produced, expansion of the metallic sheet due to heating
can take place without warping or‘ wrinkling the surface
sealed during the normal life of the container.
reasons later to appear, the axis of the longitudinal seam
33 is located within the container in line with the front
of the sheet as a whole. Moreover, due to the intimate
contact of the metallic layer with the adjacent wax layer
and rear ?aps of the container top and bottom.
As seen in FIG. 7, the liner sleeve above described
and to the excellent heat conductivity of the metallic 20
preferably is handled in collapsed form and the extreme
layer, such as aluminum, ?ow of the wax for bonding
'outer edge 34 of the ?rst pleat 30 extends. outwardly of
and for sealing purposes results readily and instantly as
edge 35 of
soon as heat is applied to the liner. By the same token,
the seam 33. Likewise, the extreme outer
the metallic layer rapidly radiates heat and cools quickly 25 the second pleat 32 extends outwardly of the lower side
edge of that pleat, thus presenting pleats each having legs
when the heat source is interrupted. These features are
of particular importance when induction heating is em
ployed, as will later appear. through tissue layer 17 is in- 4’
The wax which migrates
tended essentially to adhere to the inner surface of the
of unequal size. I have found that the sealed seam 33
should be spaced from the bend line of the blank which
is to form a corner of the container so that ?exing of that
blank at the corner will not place stress upon the seam.
container, although part of such wax is employed for dou
By providing the pleat 30 which lies in the region of the
ble sealing of certain seams of the liner. Migration of
corner, that pleat serves to accommodate those stresses
Wax through the tissue layer presents no problem, but for
and thus relieve the seam 33.
Referring now to FIG. 8; I provide an improved con
sealing of the confronting surfaces of the metallic layer I i
16 of the liner, means must be provided for permitting 35 tainer blank formed of comparatively rigid, but ?exible
passage of the wax through an otherwise impervious me
material, such as conventional paper board material.
tallic layer. We therefore provide lightly punctured seal
The dimensions of the blank are such as to provide a
ing bands of perforations in that metallic layer at the re-_
container of any required size for holding the desired
quantity of liquids or other material in the order of about
cloth, or equivalent means, while under su?icient pressure
to form a series of spaced pin-holes of sufficient size
to permit the heated wax to exude therethrough for seal
portant feature, the blank is so formed as to provide for
an abrading meansv
quired locations by passing thereover
with emery
.such as a rouletting wheel,
4 to 32 oz., as for example, pints or quarts.
As an im
double sealed top and bottom edges of the aboveede
scribed liner and particularly for rapid sealing and clos
ing purposes. In general, the layer 16 of the liner may - ing of the ?lled container.
comprise a thin sheet of metal, such as aluminum contain 45
The blank may comprise elongated front and rear wall
ing sheet or foil of commercial aluminum, 'or 3 suitable
panels 40 and 41 respectively and hingedly joined by suit
aluminum alloy in the ‘order of about 0.0003 to 0.006 inch
able bend lines to a pair of elongated side wall panels
in thickness thus requiring no excessive pressure to form
42 and 43. Extending laterally from the front wall
panel is an elongated reinforcing ?ap 44 which is pro
these pinholes.
As seen in FIGS. 5 and 5B, small pinholes 26 are 50 'vided with a conventional glue strip permitting it to be
formed in the shaped of bands 27 and 28 extending along
fastened to the inside surface of the extreme edge of side
the edges of the liner sheet which will later be sealed'to
wall 43 as the container is assembled in collapsed form.
form the top and bottom double-sealed seams, respec
Front panel 40 has hinged at its top and bottorn a pair
tively. Also a similar band 29 is formed along, the edge
of similar relatively short ?aps 45 and 46 and rear panel
of that sheet whieh’will later be sealed to form thelon 55 41 has hinged at its top and bottom a similar pair of
short ?aps 47 and 48. The combined length of the co
' gitudinal seal of the liner. In all of these bands, the pin
operating short ?aps 45-46 and 47-48 is such as to be
holes 26 extend into open communication with the wax
layer 19 as seen in FIG. 5B.
Reference now is made to
,formation of the improved
and ,7 showing the
slightly less than the distance between the front and rear
walls of the assembled container and to permit the double
liner sleeve as an intermediate 60 sealed top and bottom edges of the liner to be held be
tween those cooperating short ?aps.
article of manufacture and which can be preformed rap
One side panel 42 has hinged at its top and bottom sub
idly on high speed bag making machinery. Having the
stantially rectangular ?aps 13 and 49, while the other
above described liner sheet of» FIG. 5,'the left hand edge
side panel 43 has hinged at its top and bottom substan
thereof, is creased and bent backwardly to form the seal
ing, fold with the band 29 of the metallic layer exposed. 65 tially rectangular ?aps 14 and 50. All of the ?aps at both
At the same time'a ?rst pleat 30 is formed adjacent the
sealing fold beneath the band 29. The right hand edge of
the sheet ‘is also folded inwardly as at 31 and a second
pleat 32, generally located at about half the width of the
entire sheet, is formed. The thus creased sheet accordingly
has the porous layer 17 forming its outer surface and with
its inner surface. There
the metallic layer '16 serving as
is engaged in interlocking
top and bottom of the blank are slitted along their abut
ting edges so that they may be hingedly moved without
interference with the adjacent ?aps.
Reference now is nrade to FIGS. 9 and 12 showing one
method for rapidly assembling the above described liner
and blank intoan integrated container. As seen in FIG.
9, the collapsed liner sleeve of FIG. 7 is ?rst registered
with the developed blank of ‘FIG. 8 so that the edge 34
of the ?rstpleat 30 lies at the fold line between panels
arrangement over the outward fold containing perforated 75 '40 and 42. At this time the longitudinal seam 33 is
after‘ the‘ inward fold 31
'band 29 and a sealing means such as a heated iron or
slightly inboard of that fold line; the extreme edge 35 of
the second pleat 32 lies at the fold line between panels 41
and 43; and the ,top and bottom edges of the liner sleeve
erly occupied by side panel 43; side panel 43 moves to the
former position of rear panel 41; vrear panel 4-1 moves
are in line with
to the former position of side panel 42; and side panel
42 moves to the former position of front panel 40. Dur
wax holding the
permits slippage of those pleat surfaces
and distention of the pleats. Thus as seen in FIGS. 12A
and 10A the pleats 3t] and 32 are opened. This opening
10 of the pleats, of course, makes additional liner surface
available for bonding of the liner to the blank and re_
envelope for further
or may
be passed directly into the container processing
heated liner and blank assembly, at which time the liner
turning conveyor
belt in‘ loose assembled relation.
fully adjusts itself to the four sided blank without wrin
In either event, the
kling, and is completely sealed to the container blank in
the desired regions. The liner at this time is securely at
tached to the blank at each of the four fold lines at the
Upon leaving the
open-ended container in fully
As seen in the diagrammatic views of FIGS. 11 and
ready for opening into the shape shown in FIG. 13 and
11A, the thus described assembly is fed upon a non 25 for sealing of one of its ends preparatory to ?lling.
As will be apparent to those skilled in the package
making art, the above described method can be con
Due to the excellent heat conductivity
liner layer =16 and to the electrical
characteristics of the metal, a rapid application of heat
particularly from about
300 to 600 packages per
minute. In contrast with pre
vious procedures wherein a heated mandrel is required
to be moved through the assembled liner and blank in
order to bond them together, the passages of these com~
is thus provided as the container assembly is carried be
ponents between induction heating poles while in col
tween the poles 55 and 56. As noted in FIG. 11A, the 35 lapsed form, greatly increases the rate of production and
total length of these poles preferably corresponds to the
distance between the top edge of ?aps 45-47 and the bot
in any way detracting from the quality of the
Considering now FIGS. 13 to 15 wherein the sealing
of an end of the container is
that the top of
shown, it will be assumed
the container is shown therein and that
this time receive sui?cient heat and pressure to seal the
liner to itself in those regions. However, it is equally de
sirable to e?ect a strong bonding of the liner layer 17 to
the blank along the full surfaces of each
in FIG. 14. Simultaneously, the liner is partially pulled
away from the side top ?aps,
best seen in FIG. 3, but
with two triangular shaped asportions
still remaining
bonded to each of those ?aps.
As the ?aps partake of this movement, the confronting
faces of the liner with the abraded band 27 of metal
thereon, are brought into metal to metal contact.
the ?aps are fully
60 faces of those ?aps.
A suitable heat sealing means is then passed along this
?n at which time wax from layer 19 passes through pin
forms a bond between the two face-to-face
out of the above described ?n.
As seen in FIG. 3B the double-sealed seam generally
comprises four plies of the liner but at the location where
75 the longitudinal seam 33 is folded in the tin structure the
double sealed seam comprises eight plies of the liner.
This feature of double-sealed seam is of particular signi
?cance ‘as regards the hermetic sealing of the container.
As is known, when the longitudinal seam is merely folded
intoplace, above a top
the top of the liner is
sealed, capillary action, occurring during the handling of
the ?lled container, may cause a minute breakage of the
402 so the wax can pass through perforations during the
sealing of the ends of the liner.
One of the advantages of this lamination of FIG. 16 is
that the cellophane layer 408 is ?oating between the yield
ing porous tissue layers 404 and 412. Any differential
movements between the unielding foil layer 400, the
microcrystalline layers 406 and 410 and the carton layer
414 are compensated by the yielding action of the porous
tissues, so that no tearing action is likely to be produced
on the ?oating cellophane layer 408 at sharp corners and
hermetic seal. _We have found, however, that by employ
ing the two fold portions of the ?n and heat sealing the
overlapped eight plies of the liner, any such capillary ac 10
tion is effectively prevented. Moreover, we have found it
By bends.
way of example, the thickness of a carton card
vnecessary to so position the longitudinal seam 33 so that
board wall may be 0.015 inch, more' or less. The thick
it lies against one of the shorter top ?aps rather than
ness of the foil lamination may be 0.005 inch, more or less.
against one of the ?aps which pull away from the liner
during the sealing operation. In this Way, the integrity 15 This illustrates the relatively short distance of heat travel
required between the surface to be bonded and the heated
.of that longitudinal seam is not impaired during sealing
aluminum foil. This is in comparison to the relatively
of the container.
long distance of heat travel (or great heat resistance) from
' As shown in FIG. 4 the ?n position is reduced in height
the outside of the carton wall to the inner surface of the
from the dotted line position to the solid line position
carton wall where the bonding is to take place.
when the double sealing action and the folding action is
This application is a continuation-in-part of our copend
completed. As the ?n is-folded over the rear top ?ap 47,
ing application Serial Number 830,692, ?led July 30,
the side flap 14 carrying its triangular portions of the liner
for Lined Container for Liquids
.195 9, now abandoned,
bonded thereto is also folded over both the rear and front
Method for Rapidly Assembling
top flaps and ?nally the side ?ap 13 carrying its triangular
which in turn is a continuation-in-part of our now aban
portions of the liner bonded thereto is folded over the side
doned application .Serial Number 751,040, ?led July 25,
flap 14, After this is accomplished the overwrap 11 may
1958, for Liner Container for Liquids and Liner Therefor
be added to the package, if such is employed. Otherwise,
With Method for Rapidly
a simple adhesive'means may be used to fasten the side
' ' The thus described sealing action of one end of the con
This application is also a continuation-in-part of the co
?ap 13 upon the side ?ap 14.
tainer is duplicated during the sealing of the other end
pending applications Serial Number 606,873, ?led August
29, 1956, for Flexible Container Adapted for Fluids; Serial
Number 63 8,016, ?led February 4, 1957, for Lined Con
tainer for Liquids and Liner Therefor; and Serial Number
768,609, ?led October 21, 1958, for Lined Reclosable
thereof, one end of course, being sealed prior to the other
so that ?lling of the container may take place.
The container as made in accordance with the invention
Container 'Having Opening and Reclosing'Means.
is sanitary as Well as mechanically strong. No free adhe 35
While the form of the invention now preferred has been
sives or coatings are present on the inner metallic surface
‘disclosed in accordance with the requirement of the
which is in contact with the contents of the container.
statutes, other forms may be used, all coming within the
vThe reinforcing longitudinal seam 33 has no inwardly ex
scope of the claims which follow.
by Letters
posed edge of theliner and that seam moreover is double
What we claim as new and desire to secure
sealed at its extremities so that channeling of liquid due 40
Patent is:
to'capillary action cannot take place after ?lling and be
1. A lined container adapted
to hold a product and
fore opening of the container.
comprising, a comparatively rigid, box-like member hav
A form of lamination for use in the liner, which is now
ing a bottom portion, wall portions and a top portion, said
preferred, is shown in FIG. 16 which comprises a lamina
top portion comprising a ?rst top ?ap hinged to the front
tion of a metal (aluminum) foil layer 400, a layer of 45 ‘wall portion, a second top ?ap hinged to the rear wall
portion ‘and side top ?aps hinged to the side wall portions,
heatrresistant glue 402, a layer of porous tissue 404, a
layer of heat activated adhesive, such as rnicrocrystalline
said ?rst and second top ?aps having a combined length
wax 406, alayer of wax impervious material, such as cel
less than the distance between said front and rear wall
lophane 408, a layer of heat activated adhesive, such as 50 portions and said side top ?aps having a combined length
microcrystalline 410, and a layer of porous tissue 412.
'greater than the distance between said side wall portions;
This lamination may be used to make the liner for the car
and a liner having a non-metallic outer surface heat
sealed to said bottom, top, and wall portions and an inner
ton herein disclosed with the aluminum foil adjacent the
metallic surface heat-sealed to itself along bottom, side
contents of the container. ‘The aluminum foil 400 is in
side of the liner, whereas the layer 412 eventually is heat 55 and top seams extending respectively across said bottom
portion, longitudinally along a side wall portion, and
bonded to thecarton layer or lamination 414. The alu
minum foil layer 400 may be, for example, in the order
across said top portion, said top seam being disposed
above and between said ?rst and second top ?aps and
of about 0.0003 to 0.006 inch in thickness, such as 0.0004
beneath each of said side top ?aps, said liner having a non
inch in thickness. The’ foil400 may have the previously
shown and described grooves 21 and 22, not repeated in 60 yielding layer intermediate said non-metallic outer surface
and said inner metallic surface sandwiched between yield
'FIG. 16. The layer 402 may be of any heat resistant
ing layers to permit di?erential movement between said
glue desired. The porous tissue layer 404 may be a
container walls and said metallic surface without tearing
porous tissue paper of ‘8 pounds weight per ream of 500
of said unyielding layer because said unyielding layer is
sheets 24” by 36". ‘The layer 406 may be of microcrys
talline wax of sufficient thickness to permeate some of the . 65
?oatingly carried between said yielding layers, said liner
‘porous tissue 404. The layer 408 may be cellophane of
- containing a product therein.
2. A container as de?ned in claim 1 wherein a portion
suitable thickness, such as .001". This may be any other
of said longitudinal seam’ is attached to at least one of
type of material which is resistant to the action of the wax,
and which resists tearing and has other similar character
said ?rst and second top ?aps.
'istics of cellophane. The layers 410 and 412 may be sub 70
3. A container as de?ned in claim 1 wherein said liner
‘includes an expansion pleat extending substantially par
stantially the same as layers 406 and 404 respectively.
The Wax of layer 410 is sufficient to permeate the porous
allel to said longitudinal seam.
‘tissue of 412 and has su?icient excess, so that it may ex
and 414 to
. tend into the space between the layers 412
layers 412 and 414. V
produce a bonding action between the
. Per-forations pass through the foil 400 and layer of glue
‘ 4. A container as de?ned in claim 1 wherein said top
seam is folded upon itself to provide at least four plies of
said liner.
. r
45. A container as de?ned in claim 1 wherein said top
9. A liner as de?ned in claim 7 including a band of
least eight plies of
perforations extending along the open ends of said col
folded upon itself.
6. A container as de?ned in claim 1 wherein said metal
lie surface of said liner comprises aluminum.
7. For use in lined container adapted to hold liquids
and to be rapidly assembled, ?lled and sealed, a laminated
10. A liner having a layer of non-yielding metallic foil
on a ?rst side thereof and a layer of porous yielding mate
rial on the second side thereof, a layer of imperforate
layers ?oat said imperforate layer therebetween.
References Cited in the ?le of this patent
25 2,441,778
in claim 7 having an expansion
said longitudinal
Schmied ______________ __ Feb. '9, 1943
Klein _______________ __ Nov. 21, 1944
Gardner _____________ __ Mar. 12, 1946
Waters ________________ _._ July 8, 1947
Traver ______________ __ May 18, 1948
Anderson _____________ __ Sept. 6, 1949
Gottesrnan ___________ _._ June 10, 1952
Hurrey et a1 ___________ __ Aug. 12, 1952
Von Hauteville ________ __ Nov. 11, 1952
Jacke ________________ _._ Aug. 29, 1961
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